å¿ è¦ãªç¥è ãã®ããã¥ã¡ã³ãã§ã¯ã次ã®ãã¨ã¯åãã£ã¦ãããã®ã¨ãã¦è©±ãé²ãã¾ãã iptables ã®ä½¿ããã TCP ã«ãããã³ãã¯ã·ã§ã³ç¢ºç«ã®æé ï¼SYN ã®ç«ã£ã¦ããã±ãããã£ã¦ä½ï¼ ã¨ããããããåãã£ã¦ããã°ããï¼ ç¨èª 試è¡ã»ãã°ã¤ã³è©¦è¡ã»æ»æ ã©ããããã°ã¤ã³ããããã¨ãããã¨ï¼ ssh -l fobar example.com ç ãå®è¡ãããã¨ï¼ãæãã¾ãã [email protected]'s password: ã¨ã ã表示ãããç¶æ ã¾ã§è¡ãããã試è¡ãæåãããã¨ãããã¨ã«ãã¾ããã ã®ããã¥ã¡ã³ãã§èª¬æãã¦ãã対çã§ã¯ããã以åã®æ®µéã§å¼¾ãããããã« ãªãã¾ãï¼ ssh -l fobar example.com ãå®è¡ãã㨠ssh: connect to host example.com port 22: Connection refused çã¨è¡¨ç¤ºããã
{{#tags}}- {{label}}
{{/tags}}